4 papers
Dark Energy and Right-Handed Neutrinos
Riccardo Barbieri, Lawrence J. Hall, Steven J. Oliver +1
We explore the possibility that a CP violating phase of the neutrino mass matrix is promoted to a pseudo-Goldstone-boson field and is identified as the quintessence field for Dark…
Evolving Dark Energy with w Deviating from -1
Lawrence J. Hall, Yasunori Nomura, Steven J. Oliver
Theories of evolving quintessence are constructed that generically lead to deviations from the w = -1 prediction of non-evolving dark energy. The small mass scale that governs evol…
CMB Signals of Neutrino Mass Generation
Z. Chacko, Lawrence J. Hall, Takemichi Okui +1
We propose signals in the cosmic microwave background to probe the type and spectrum of neutrino masses. In theories that have spontaneous breaking of approximate lepton flavor sym…
Explicit Supersymmetry Breaking on Boundaries of Warped Extra Dimensions
Lawrence J. Hall, Yasunori Nomura, Takemichi Okui +1
Explicit supersymmetry breaking is studied in higher dimensional theories by having boundaries respect only a subgroup of the bulk symmetry. If the boundary symmetry is the maximal…